[Paraview] Displaying Hierarchical Structure/Components of objects displayed in Paraview

[Olumide]

> We are focusing on these features for the next release. For now, you
> can extract individual parts using "Extract Group" filter.

If I could suggest a two features:

1. A reload menu option -- so that a file thats been changed on disk can 
be reloaded without having to delete and reimport it.

2. Drag and drop reordering of files/entities in the pipeline browser

Thanks,

- Olumide